Organize and Share your Electronics the way you want. Sign-Up for a free account now. It takes only 30 seconds!

Low Floating High logic Detector

Low Floating High logic Detector

This circuit is a dual low/floating/high logic state detector which enables you to see the logic state of a digital signal pin. Each detector has two LEDs (typically a red and a green one) which indicate the state: red LED for high state, green LED for low and no LED for floating.
Features and attributes:

5V version; for a 3.3V version you just need to change R8 and R14 for LED current limitation.

Low/high thresholds adjustable via R13.

Frequencies up to 10kHz are properly handeled (low and high LED on), higher frequencies (especially above 100kHz) are displayed like floating state (no LED running).

Cheap: The complete circuit (two detectors) costs less than 5 Euro (equivalent $5).

Visit Here for more.

 

More Articles to Read

App note: Testing inductors at application frequencies
App note: Testing inductors at application frequencies
1968 Princeton Reverb Repairs
1968 Princeton Reverb Repairs
Skill Sunday: Power Over Ethernet for Arduino
Skill Sunday: Power Over Ethernet for Arduino
More on Color TFT Displays ~ The Big Ones — 240 X 320
More on Color TFT Displays ~ The Big Ones — 240 X 320
Magnetic Rotary Encoder
Magnetic Rotary Encoder
Vertical Pole Climbing Robot
Vertical Pole Climbing Robot
ESP8266 Weather Station Projects
ESP8266 Weather Station Projects
Single tube Lethal Nixie clock
Single tube Lethal Nixie clock
How to make a simple 1 watt audio amplifier (LM386 based)
How to make a simple 1 watt audio amplifier (LM386 based)
Flashing Binaries to DRA7xx Factory Boards Using Device Firmware Upgrade
Flashing Binaries to DRA7xx Factory Boards Using Device Firmware Upgrade

Top




Shares